Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv() l2cap_ecred_data_rcv() reads the SDU length field from skb->data using get_unaligned_le16() without first verifying that skb contains at least L2CAP_SDULEN_SIZE (2) bytes. When skb->len is less than 2, this reads past the valid data in the skb. The ERTM reassembly path correctly calls pskb_may_pull() before reading the SDU length (l2cap_reassemble_sdu, L2CAP_SAR_START case). Apply the same validation to the Enhanced Credit Based Flow Control data path.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before cef09691cfb61f6c91cc27c3d69634f81c8ab949; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before 3340be2bafdcc806f048273ea6d8e82a6597aa1b; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before e47315b84d0eb188772c3ff5cf073cdbdefca6b4; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before 477ad4976072056c348937e94f24583321938df4; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before 40c7f7eea2f4d9cb0b3e924254c8c9053372168f; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before 8c96f3bd4ae0802db90630be8e9851827e9c9209; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before 5ad981249be52f5e4e92e0e97b436b569071cb86; affected aac23bf636593cc2d67144aed373a46a1a5f76b1 before c65bd945d1c08c3db756821b6bf9f1c4a77b29c6 |
| Linux / Linux | affected 3.14; unaffected 0 before 3.14; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.168 through 6.1.*; unaffected 6.6.131 through 6.6.*; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949
- https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b
- https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4
- https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4
- https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f
- https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209
- https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86
- https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6